What is the URL scheme that is used by Bitcoin to copy transaction information directly into the client? Which versions of Bitcoin clients support it?

2 Answers 2


The Bitcoin Improvement Proposal that defines the Bitcoin URI scheme is BIP21.

The simple syntax is:


On the desktop all of Armory, Electrum and MultiBit respond to Bitcoin URI clicks in a browser and I believe Bitcoin-QT V0.7 does as well.

On mobiles Android Bitcoin Wallet does. On the iPhone the blockchain.info app does.

  • 1
    Bitcoin-Qt v0.7 for Windows does. Not Mac or Linux yet. Oct 11, 2012 at 20:56
  • 4
    It's important to note that although it isn't specified in the simple syntax, '?' after the first are changed to '&' as in regular URLs. For example: bitcoin:<myaddress>?amount=1&message=mymsg
    – Kevin Cox
    Jan 13, 2014 at 23:02
  • 7
    Not to nitpick, but the acronym "BIP" stands for Bitcoin Improvement Proposal instead of Bitcoin Improvement Process. Mar 26, 2015 at 15:19
  • Apparently the number of decimals in the BTC amount matters. My wallet was rejecting the uri until I reduced the decimals to eight.
    – KalenGi
    Feb 10, 2016 at 8:57

I think you need something like this

<a rel="payment" href="bitcoin:bitcoin_address_is_here?amount=5.00?message=payment to site name"><h2>Pay in Bitcoin now</h2></a>

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